SSH Keys Pilot

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In our continuous efforts to secure our national infrastructure, we have implemented a new feature in the CCDB whereby public SSH keys can be uploaded to your account and used to connect to our clusters (Cedar, Graham, Béluga and Niagara and Mist).

We are evaluating the possibility of enforcing authentication with SSH keys to access all of our clusters; therefore we will be conducting a pilot project beginning on November 1, 2021, which will involve Niagara and Mist.

Important dates[edit]

Starting on November 1, 2021: Authentication on Niagara and Mist with SSH keys will only accept keys that have been uploaded to the CCDB. Keys that are only in .ssh/authorized_keys will no longer work.

Every Monday of November 2021: From 10:00AM to noon Eastern time, authentication on Niagara and Mist will only be possible with SSH keys. Authentication using passwords will be disabled.

December 1, 2, 3 and 6, 7 2021: From 09:00AM to 01:00PM Eastern time, authentication on Niagara and Mist will only be possible with SSH keys. Authentication using passwords will be disabled.

After December 8, 2021: Depending on lessons learned, authentication on Niagara and Mist may be restricted to SSH keys only.

What you need to do[edit]

To learn about SSH keys, see the drop-in sessions on https://support.scinet.utoronto.ca/education/go.php/586/index.php/ib/1//p_course/586.

If you know how to use SSH keys,

  1. Create your SSH key pair from your workstation.
  2. Upload your SSH public key to your CCDB account by connecting to https://ccdb.computecanada.ca/ssh_authorized_keys. After a few minutes, you should be able to authenticate on Niagara or Mist
  3. If the .ssh folder in your $HOME directory contains a file named authorized_keys, it should be deleted.
  4. Log out of the cluster and log in again.

Additional documentation on usage and best practices is also available in SSH Keys

Support[edit]

If you still have questions or need assistance after reading these documents, please register and join one of the following sessions:

Monday, October 25th, 03:00PM - 04:00PM ET: conducted in English with support for questions in French

Thursday, October 28th, 11:00AM - 12:00PM ET: conducted in English with support for questions in French

Friday, October 29th, 12:00PM - 01:00PM ET: conducted in French

Monday, November 15th, 12:00PM - 01:00PM ET: conducted in English with support for questions in French

Friday, November 22nd, 12:00PM - 01:00PM ET: conducted in English with support for questions in French